You can also exchange it for a new box if you're having technical difficulties. A technician usually installs your cable and cable box, but you can remove a Comcast cable box and return or exchange it by yourself.
Eat vitamin A each day to keep your digestive system healthy. The surface of your digestive tract is made up of mucosal tissues. These tissues secrete compounds that help with digestion -- the mucosal lining in your stomach, for example, secretes stomach acid -- and also absorb the nutrients from your food.
Essential B vitamins for the digestive system include: 1  B1. Also known as thiamine, B1 helps your body change the carbohydrates in your diet into energy for your cells and regulate appetite.  B3. Also known as niacin, this vitamin is important for many digestive tract functions, including the breakdown of carbohydrates, fats, and alcohol.